soc/intel: Add Intel Xeon Scalable Processor support

This patch adds support for Intel Xeon-SP.

This patch is developed and verified with Skylake Scalable
Processor, which is a processor in Xeon-SP family. The code
is expected to be reusable for future geneations of Xeon-SP
processors, and will be updated with smaller targeted
patches accordingly, to add support for additional Xeon-SP
processors, to add features, and to improve the code base.

The Skylake-SP FSP is based on FSP 2.0. The FSP is a
proof-of-concept build. The binary is not shared in public,
when this patch is upstreamed.

Signed-off-by: Jonathan Zhang <jonzhang@fb.com>
Signed-off-by: Reddy Chagam <anjaneya.chagam@intel.com>
Tested-by: johnny_lin@wiwynn.com
Change-Id: Idc9c3bee17caf8b4841f0bc190cb1aa9d38fc23e
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38548
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: David Hendricks <david.hendricks@gmail.com>

src/soc/intel/xeon_sp/Kconfig

@@ -0,0 +1,134 @@
+##
+## This file is part of the coreboot project.
+##
+## Copyright (C) 2019 - 2020 Intel Corporation
+## Copyright (C) 2019 - 2020 Facebook Inc
+##
+## This program is free software; you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation; either version 2 of the License, or
+## (at your option) any later version.
+##
+## This program is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+## GNU General Public License for more details.
+##
+
+config SOC_INTEL_XEON_SP
+	bool
+	help
+	  Intel Xeon SP support
+
+if SOC_INTEL_XEON_SP
+
+config CPU_SPECIFIC_OPTIONS
+	def_bool y
+	select ARCH_BOOTBLOCK_X86_32
+	select ARCH_RAMSTAGE_X86_32
+	select ARCH_ROMSTAGE_X86_32
+	select ARCH_VERSTAGE_X86_32
+	select BOOT_DEVICE_SPI_FLASH_RW_NOMMAP_EARLY if BOOT_DEVICE_SPI_FLASH
+	select BOOT_DEVICE_SUPPORTS_WRITES
+	select POSTCAR_CONSOLE
+	select SOC_INTEL_COMMON
+	select SOC_INTEL_COMMON_RESET
+	select PLATFORM_USES_FSP2_0
+	select FSP_PLATFORM_MEMORY_SETTINGS_VERSIONS
+	select FSP_T_XIP
+	select FSP_M_XIP
+	select FSP_USE_REPO
+	select POSTCAR_STAGE
+	select IOAPIC
+	select PARALLEL_MP
+	select SMP
+	select INTEL_DESCRIPTOR_MODE_CAPABLE
+	select COMMON_FADT
+	select SOC_INTEL_COMMON_BLOCK
+	select SOC_INTEL_COMMON_BLOCK_CPU
+	select SOC_INTEL_COMMON_BLOCK_TIMER
+	select SOC_INTEL_COMMON_BLOCK_LPC
+	select SOC_INTEL_COMMON_BLOCK_RTC
+	select SOC_INTEL_COMMON_BLOCK_SPI
+	select SOC_INTEL_COMMON_BLOCK_FAST_SPI
+	select SOC_INTEL_COMMON_BLOCK_PCR
+	select TSC_MONOTONIC_TIMER
+	select UDELAY_TSC
+	select SUPPORT_CPU_UCODE_IN_CBFS
+	select CPU_INTEL_FIRMWARE_INTERFACE_TABLE
+
+config MAINBOARD_USES_FSP2_0
+	  bool
+	  default y
+
+config USE_FSP2_0_DRIVER
+	  def_bool y
+	  depends on MAINBOARD_USES_FSP2_0
+	  select PLATFORM_USES_FSP2_0
+	  select UDK_2015_BINDING
+	  select POSTCAR_CONSOLE
+	  select POSTCAR_STAGE
+
+# Fake FSP binary is used, as the current FSP binary for SKX-SP
+# is an engineering build. It is not available to the public
+# for now.
+config FSP_FD_PATH
+	  string "Location of FSP binary"
+	  depends on FSP_USE_REPO
+	  default "3rdparty/fsp/KabylakeFspBinPkg/Fsp.fd"
+
+config FSP_HEADER_PATH
+	  string "Location of FSP headers"
+	  depends on MAINBOARD_USES_FSP2_0
+	  default "src/vendorcode/intel/fsp/fsp2_0/skylake_sp"
+
+config MAX_SOCKET
+	int
+	default 2
+
+# For 2S config, the number of cpus could be as high as
+# 2 threads * 20 cores * 2 sockets
+config MAX_CPUS
+	int
+	default 80
+
+config PCR_BASE_ADDRESS
+	hex
+	default 0xfd000000
+	help
+	  This option allows you to select MMIO Base Address of sideband bus.
+
+config DCACHE_RAM_BASE
+	hex
+	default 0xfe800000
+
+config DCACHE_RAM_SIZE
+	hex
+	default 0x200000
+
+config DCACHE_BSP_STACK_SIZE
+	hex
+	default 0x10000
+
+config MMCONF_BASE_ADDRESS
+	hex
+	default 0x80000000
+
+config CPU_MICROCODE_CBFS_LOC
+	hex
+	default 0xfff0fdc0
+
+config CPU_MICROCODE_CBFS_LEN
+	hex
+	default 0x7C00
+
+config C_ENV_BOOTBLOCK_SIZE
+	hex
+	default 0xC000
+
+config HEAP_SIZE
+	hex
+	default 0x80000
+
+
+endif ## SOC_INTEL_XEON_SP